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Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 0002 PID: SPN: None FMI: LAMP: SRT: |
Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source. Low signal voltage or open circuit detected at the Exhaust Gas Pressure Sensor circuit. |
None on performance. |
 Exhaust Gas Pressure Sensor Number 1 Circuit
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Circuit Description
The exhaust gas pressure sensor provides the exhaust gas pressure to the exhaust gas treatment monitor unit through the exhaust gas treatment monitor harness.
Component Location
The exhaust gas pressure sensor will be located near the inlet to the exhaust catalyst. The location will vary depending on application.
Shop Talk
Possible causes of this fault code include:
- Signal circuit open or shorted to ground in the exhaust gas treatment monitor harness or exhaust gas pressure sensor.
- Supply line open or shorted to ground.
This fault code will only be present in the exhaust gas treatment monitor unit and will not be present in the engine electronic control module (ECM). The exhaust gas treatment fault code and maintenance lamps will both flash two times in sequence to alert the operator that this condition exists. The engine diagnostic lamps will not illuminate.
Refer to Troubleshooting Fault Code t05-0002
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